Pencil-tip calendar.



No. 817,651. PATENTED APR. 10, 1906. F. J. MATHEIN.

PENCIL TIP CALENDAR.

W itnessesz Inventor.

Attorney.

rmrrnn srarns PATENT CFFICE.

FRANK JOSEF MATHEIN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, TO WILLIAM H. HURLEY, OF NEW HAVEN, CONNECTICUT.

PENCIL-TIP CALENDAR.

Specification of Letters Patent.

Patented April 10, 1906.

ing is a specification.

My invention has for its object to produce a light, inexpensive, andhighly ornamental pencil-tip which shall comprise in its construction aperpetual calendarthat is, a calendar which will be always accurate,leapyears as well as other years, and will require setting on the firstday only of each month.

IVith this end in view I have devised the simple and novel pencil-tipcalendar of which the following description, in connection withtheaccompanying drawings, is a specification, reference characters beingused to indicate the several parts.

Figure 1 is a perspective illustrating one form of my novel pencil-tipcalendar in place on a pencil, the sleeve being adapted to be slid uponthe pencil and to be self-retaining thereon by friction and the ringbeing locked in place by a nut; Fig. 2, a longitudinal sectionillustrating this form of the invention detached; Fig. 3, a perspectiveillustrating a form of the invention in which the sleeve and ring arepentagonal in form and the device is adapted to be screwed upon the endof a pencil, the ring being locked by a nut, as in Figs. 1 and 2.

The essential features of the device are a sleeve (indicated by 10)which has marked thereon seven columns I of numerals corresponding withthe days of months, a ring rotatable thereon, which has marked thereonthe first letters of the days of the week, as S for Sunday, M forMonday, &c., and means for retaining the ring in place under theordinary conditions of use, but which will permit it to be convenientlyadjusted when required.

The sleeve and the ring may be made of metal, celluloid, vulcanizedfiber, or any suitable material, and the letters and numerals may bestamped or marked thereon in any ordinary or preferred manner. It is ofcourse wholly immaterial, so far as the principle of the invention isconcerned, whether the sleeve and ring are round, as in Figs. 1 and 2,or pentagonal, as in Fig. 3. The sleeve may be provided with an internalscrew-thread 12, as in Fig. 3, to permit it to be screwed upon the endof a pencil or be provided with slots 13, as in Figs. 1 and 2, whichpermit the end of the sleeve to be slid over the end of the pencil andwill cause the sleeve to be self-retaining thereon by the resiliency ofthe sections of the sleeve which, are indicated by 14. In this form-ashoulder 22 may be formed upon the inner side of the sleeve, againstwhich the end of the pencil rests and which prevents the tip fromsliding farther over the pencil. It is to be understood, of course, thatthe pentagonal form above referred to, as illustrated in Fig. 3, appliesonly to the external shape or exposed portions of the sleeve and ring,the portion of the sleeve on which the ring rotates being of such formas to .permit of the necessary rotary adjustment.

The numerals upon the sleeve are indicated by 15. They run from 1 to 31,corresponding with the days of the longest months, and are arranged inseven vertical columns or in superposed circles of numerals with sevennumerals in each circle, the first circle including the numerals from 1to 7," the second from 8 to 14, &c., the last circle containing only thenumerals 29, 30, and 31. Above the numerals the sleeve is'provided witha shoulder 16, upon which the ring rests. The letters upon the ring areindicated by 25. As already stated, they are simply the first letters ofthe days of the week.

In the forms illustrated the ring after setting is locked in place bymeans of a nut 17, which engages a thread 18 at the outer end of thesleeve. To set the calendar, the operator loosens the nut by turning itbackward, then turns the ring on the sleeve until the lettercorresponding with the day of the week registers with the first of thenumerals corresponding with the days of the month, as in Fig. 1, wherethe first day of the month is supposed to be Monday. The operator thenlocks the ring in place by tightening the nut, which clamps the ringbetween the nut and the shoulder on the sleeve.

A block of rubber to serve as an eraser, as indicated b 24, may beplaced in the outer end of the sleeve.

23 indicates one or more shoulders on the inner side of the sleeve nearits outer end,

against which the inner end. of the block of marked thereon letterscorresponding with rubber may rest, so that the eraser maybe the days ofthe week and a nut engaging the shifted when partly worn away.

claim adapted to engage the end of a pencil and mounted to turn on thesleeve and having screw thread whereby the ring may be looked i 5 Havingthus described my invention, I l in place by being clamped between thenut and the shoulder.

In testimony whereof I a'ffiX my signature in presence of two witnesses.

FRANK JOSEF MATHEIN.

A pencil-tip calendar comprising a sleeve ovided at its outer end with ascrew-thread ending with the days of the months, a ring

